[Premium-Rx] Cubic CDR-3280 Digital I + Q output

[David I. Emery]

On Mon, Jan 17, 2011 at 09:59:38PM -0800, Mack Rogers wrote:


> The serial data is framed in 32 bit words consisting of 16-I and 16-Q
> bits. The pinout and signals are well defined in the manual. Our problem
> is nobody seems to know how to deal with this data format.

	Virtually ANY SDR software expects such data formats or similar
as its basic internal format for sample data, but obviously to use the
data from this radio you both have to get it into the computer in some
reasonably efficient fashion and provide software drivers for the input
hardware that interfaces with the existing sound card oriented code.


> 
> But I have successfully used the SoftRock Lite IF kit SDR piece to process the RF IF output in a PC. So I may not be missing much by not being able to use the J7 data output. But it would be nice to find out some day. LOL
> 
> N4VGB
> Mack Rogers
> 
> 
> 
>  
> 
> --- On Mon, 1/17/11, David I. Emery <die at dieconsulting.com> wrote:
> 
> > From: David I. Emery <die at dieconsulting.com>
> > Subject: Re: [Premium-Rx] Cubic CDR-3280 Digital I + Q output
> > To: wombat5 at ntlworld.com
> > Cc: Premium-Rx at mailman.qth.net
> > Date: Monday, January 17, 2011, 11:43 PM
> > On Sun, Jan 16, 2011 at 10:51:56AM
> > -0000, wombat5 at ntlworld.com
> > wrote:
> > 
> > > The output I am asking about is the digital serial
> > output from the 15
> > > pin D connector J7.  From the connector info in
> > the manual there is a
> > > serial data output, a clock, and a frame sync. Looks
> > like it will remain
> > > a mystery!
> > 
> >     You COULD look at these signals 
> > with either a logic analyzer or
> > a DSO with relatively deep storage.... or both. 
> > Likely they  consists
> > of 8 or 16 or 24 bit word containing one I or Q sample sent
> > bit
> > serially - or perhaps two words (I and Q) after each frame
> > sync pulse.
> > 
> >     Using this for anything would require
> > some hardware to take
> > the serial bits and clock them into some kind of register
> > for access
> > by software on a processor (presumably a PC)...
> > 
> > 
> > -- 
> >   Dave Emery N1PRE/AE, die at dieconsulting.com 
> > DIE Consulting, Weston, Mass 02493
> > "An empty zombie mind with a forlorn barely readable
> > weatherbeaten
> > 'For Rent' sign still vainly flapping outside on the weed
> > encrusted pole - in 
> > celebration of what could have been, but wasn't and is not
> > to be now either."
> > 
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> > 
> 
> 
>       

-- 
  Dave Emery N1PRE/AE, die at dieconsulting.com  DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in 
celebration of what could have been, but wasn't and is not to be now either."